A flurry of synthetic drug-related problems in the Hutt Valley has significantly dropped off, with police uncertain as to why.
But Inspector James McKay said while they couldn't put their fingers on what has caused the decrease in incidents, police are pleased either way.
"At its height, which was probably about six months ago, we took enforcement action against several dealers and suppliers and ever since, we've sort of indirectly noticed a bit of a decrease in those incidents," he said.
In the last few months police have seen a "drop off" in those incidents, which include "synthetic-related jobs around people under the influence or suffering from the medical effects of synthetics consumption."
"I'm sure it's still happening but however, as I say, we've noticed a bit of a decrease."